Life
Explainer: What is an invasive species?
These foreign organisms hitchhike, spread widely and stir up trouble in native ecosystems.
Animals
More Stories in Animals
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Health & MedicineLet’s learn about snot
For humans, snot plays a key role in fighting off diseases. Other animals have found different uses for the slimy stuff.
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AnimalsAs the tropics warm, some birds are shrinking
Migratory birds are getting smaller as temperatures climb, studies had showed. New evidence shows dozens of tropical, nonmigratory species are, too.
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ClimateCan scientists develop an icy sanctuary for Arctic life?
The final refuge for summer sea ice may also protect the creatures that depend on it. Saving it is an ambitious goal with many hurdles.
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AnimalsLet’s learn about chimpanzees and bonobos
Humankind’s closest cousins in the animal kingdom may look similar, but in terms of behavior, they’re polar opposites.
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LifeScientists Say: Adaptation
This word refers to a feature of a living thing that helps it better survive in its environment — or the process of that feature evolving in a population.
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Fossils‘Penis worms’ could have been the original hermits
These soft-bodied critters lived in abandoned shells about 500 million years ago, a new study suggests.
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AnimalsA panda stands out at the zoo but blends in the wild
A panda may stand out among the bamboo at the zoo, but in the wild, its black-and-white coloring camouflages it from predators, a new study finds.
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AnimalsMeat-eating bees have something in common with vultures
Flesh-eating bees have acid-producing gut bacteria, much as vultures do. It lets them safely snack on rotting meat.
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FossilsFossils point to earliest dinosaurs that lived in herds
A fossilized family gathering of long-necked Mussaurus from 193 million years ago is the earliest evidence yet of herd behavior in dinos.